The realization principle of system anti-repudiation is based on digital signature technology. From the above description of digital signature technology, we know that based on signature and signature verification, we can judge that the sender of data is a real user.
By verifying the signature, we can judge whether the data has been changed during transmission. Therefore, it can be realized that the sender of data cannot deny the sent data, and the sent data is complete, so as to meet the requirements of non-repudiation and integrity of the system.
Realization principle based on signature and signature verification should be adopted in both B/S architecture and C/S architecture. For the B/S architecture, the client data signature module is configured in the form of a control in the web page that needs to be signed for users to download when visiting. For C/S architecture, the client data signature module is called by professional client software in the form of dynamic library.
Anti-denial service aims to generate, collect and maintain evidence about declared events or behaviors, so that these evidence can be obtained and verified, thus solving security problems related to e-mail, such as forgery, denial, malicious mail and spam.
In the field of e-commerce, it often happens that electronic transactions are denied afterwards. Because the e-mail transmission protocol has defects at the beginning of its design, and it lacks corresponding security measures such as responsibility attribution, it is difficult to provide legal basis for investigating relevant responsibilities.